A-62
Standard Photoelectric Sensors
Precautions
Do not connect an AC power supply to the Sensor. If AC pow-
er (100 VAC or more) is supplied to the Sensor, it may ex-
plode or burn.
Be sure to abide by the following precautions for the safe op-
eration of the Sensor.
Wiring
Power Supply Voltage and Output Load Power Supply Volt-
age
Make sure that the power supply to the Sensor is within the
rated voltage range. If a voltage exceeding the rated voltage
range is supplied to the Sensor, it may explode or burn.
Load Short-circuiting
Do not short-circuit the load, otherwise the Sensor may be
damaged.
Connection without Load
Do not connect the power supply to the Sensor with no load
connected, otherwise the internal elements may explode or
burn.
Operating Environment
Do not use the Sensor in locations with explosive or flamma-
ble gas.
Design
Power Reset Time
The Sensor is ready to operate 100 ms after the Sensor is
turned ON. If the load and Sensor are connected to indepen-
dent power supplies respectively, be sure to turn ON the Sen-
sor before supplying power to the load.
Wiring
Avoiding Malfunctions
If using the Photoelectric Sensor with an inverter or servomo-
tor, always ground the FG (frame ground) and G (ground) ter-
minals, otherwise the Sensor may malfunction.
Mounting
Mounting the Sensor
• If Sensors are mounted face-to-face, make sure that the op-
tical axes are not in opposition to each other. Otherwise,
mutual interference may result.
• Always install the Sensor carefully so that the aperture an-
gle range of the Sensor will not cause it to be directly ex-
posed to intensive light, such as sunlight, fluorescent light,
or incandescent light.
• Do not strike the Photoelectric Sensor with a hammer or
any other tool during the installation of the Sensor, or the
Sensor will lose its water-resistive properties.
• Use M3 screws to mount the Sensor.
• When mounting the case, make sure that the tightening
torque applied to each screw does not exceed 0.54 Nm.
M8 Connector
• Always turn OFF the power supply to the Sensor before
connecting or disconnecting the metal connector.
• Hold the connector cover to connect or disconnect it.
• Secure the connector cover by hand. Do not use pliers, oth-
erwise the connector may be damaged.
• If the connector is not connected securely, it may be discon-
nected by vibration or the proper degree of protection of the
Sensor may not be maintained.
Distance setting models E3Z-LS
• Make sure that the sensing side of the Sensor is parallel
with the surface of the sensing objects. Normally, do not in-
cline the Sensor towards the sensing object.
If the sensing object has a glossy surface, however, incline
the Sensor by 5° to 10° as shown in the illustration, provided
that the Sensor is not influenced by background objects.
• If there is a mirror-like object below the Sensor, the Sensor
may not operate stably. Therefore, incline the Sensor or
separate the Sensor from the mirror-like object as shown
below.
!
Caution
Correct Use
Sensing side
Surface of sensing object
Glossy object
Mirror-like object
Sensing object
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